T-Mobile USA has confirmed that it will join some of its competitors in releasing the Samsung Galaxy Tab next month. But while Sprint and Verizon have both announced that they will sell the Tab on November 14, T-Mobile is jumping out of the gate and making the device available in retail stores and online beginning November 10.

We’ve known that T-Mobile would carry the Galaxy Tab since the U.S. launch event in September. Now we can confirm that T-Mobile will sell the tablet for $399.99 on a two-year agreement. No off-contract price has been stated, but based on what Sprint and Verizon have stated, the Tab is likely to cost $599 off-contract. The Galaxy Tab will be offered with standard data plans or webConnect.

The Galaxy Tab – sporting Android 2.2, 7-inch screen, and a 1 GHz Hummingbird processor – will come with the following apps and features: